ENGINE MISFIRE

1977 Cadillac Seville

Tiny

jimbo1430

November, 21, 2009 AT 12:35 PM

Engine Mechanical problem
1977 Cadillac Seville V8 Two Wheel Drive Automatic 70100 miles

#2578 cly will not fire, vac hose have been checked and pinched off, intake and carb have been tighten, light oil sprayed between intake and cly head. Dist cap and wires checked and rechecked

FOUND 11934 RELATED QUESTIONS

1 Answer

Tiny

rasmataz

November, 21, 2009 AT 2:53 PM

Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.

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